Spring seat construction



Oct. 25, 1949.

S. OVERBY SPRING SEAT CONSTRUCTION Original Filed Oct. 15, 1943 BY 12 5mm a/LZM 575m A TTO/PNE Y Patented ()ct. 25,1949

2,485,650 SPRING SEAT CONSTRUCTION anley Over-b n lewood Ca i Original application October 15, 1943, Serial No.

506,328. Divided and this application December 20, 1944, Serial No. 5 9,913

6 c aim ue-1 This invention relates to spring seats for articles of furniture, the construction including a platform supported by spring means upon a framework.

The principal objects of the invention include that of providing an improved construction of spring seats that will result in increased comfort and resiliency; yet in economy in manufacture; and which will be of general superiority and seryiceability with relative simplicity, inexpensiveness of construction, and general overall efficiency and improvement.

My invention also aims to provide means of this classification which will be positive in operation, convenient in use, easy to install into its working position and equally easily disconnected therefrom; simple and economical in fabrication, and of general superiority.

The invention also comprises novel details of construction; novel parts and the combinations and arrangements of same, as will more fully appear hereinafter. However, the drawings attached, and the description appended, merely disclose embodiments of the invention, presented for purposes of clarification only, the invention being limited in the embodiments it can take, only by the scope of the sub-joined claims.

This application is'a division of application, Serial'No. 506,328, filed October 15, 1943, entitled "Spring seat construction, the same issued as Patent No. 2,437,119,0n March 2, 1948.

In the'accompanying drawings, in which like reference characters designate like parts in the several views:

Fig. 1 is a detailed fragmentary side elevation, partially in section, of a certain embodiment of my invention.

Fig. 2 is a substantially horizontal section, taken on line 2-2 of Fig. 1, sighting in the direction of the arrows. 3 is an isometric perspective view of one of the components of the present construction, here shown as, a bracket. or anchorage.

Fig. 4' is an enlarged sectional detail on line 4-4 "of Fig. 2, sighting in the direction of the arrows.

Fig. 5 is also an enlarged sectional detail, but taken on line 5-5 of Fig. 4.

'Fig'. 6 is a horizontal fragmentary detail. of another embodiment of our invention.

-Fig. '7 is'a side elevation of the construction shown in Fig. 6.

"Referring more in detail to the various. constructions shown in the drawings, and particularly to Fig. 1, the ir'iven'tive concepts are embodied in a chair having a'base frame indicated at 55 supported upon four legs, a portionof one of which is partially represented at 56. The base frame has a front rail 51, and also a rear rail and a middle rail (not shown).

The chair also includes a seat frame, partially shown at 6| in Fig. 1. The seat frame has front ahd rear rails, the front one of which is shown a 62. v a

Front coil springs 66 resiliently support the front of the seat frame, spaced vertically from the front rail 51. The upper arms 61 of the springs '66 terminate in portions 61' bent at right angles to the rest of the upper arms. These'right-angularly'bent ends are fixedly mounted in brackets 39, attached'to the underside of the front rail .62 of the seat frame.

The lower ends of the arms 68 of the coil springs 56 have pivotal connections 69 with the free ends of arms 10, that are provided with loops H which swivel on grooved posts 12. The arms 19 are flexible betweenthe pivots'69 and loops I l. The pivotal'connections 69 operate on axes parallel with the front rail 51. The posts 12 are screwed to the front rail 51, as shown at I3. The posts 12 are mounted adjacent opposite front ends of b se am As hes't seen in Fig. 3, the bracket group 39 comprises a back-plate 40 and a front-plate 4|, th We Pl e e n Prov d w t l n Screwopenings 4?. The front plate has a channel the members 43 44 of which are disposed substantially at right angles to each other, for holding respectively the arm 61 and the bent end. 5 o et'e hvirtue of this construction and arrangement of parts, any tendency of the coil 66 to turn laterally, or twist, is overcome.' A v The specific details of the construction and mounting of-ppsts 12 is shown in Figs. 4 and 5,

form two other aspects.

Referring now to the embodiment illustrated in Fig. 6, numeral 9 designates, generally, apart of the framework of a chair-seat or other seat.

I The framework includes a front rail ID, a rear rail not shown), and side rails l3.

On this framework is. mounted, in a mode here inafter" partieularized, a platform l5. The platform is supported within a frame l6 by any suitable desired means; coiled Springs [8 are the means here shown by way of example. Members I 9, here. shown as hooks, are looped around frame l6 and engaged through the fabric. [1 around all edges. of the fabric or; the hooks l9 may be employed only. at the corners of the fabric.

The frame [6 also carries a plurality of coplanar, sinuous springs '20, arranged in parallelism and hooked over the front and rear mem-- bers of the frame 16. The springs 20 are preferably formed as a series of hairpin turns lying in the one horizontal plane. Certain coiled springs ll are engaged over' the side members of the frame [6 and connect with loops in the turns of springs 20, as best seen in Fig. 6.

Front springs 20 are provided for supporting the front portion of frame l6 and these springs are helically looped as at 29.. The springs 20' have legs 30 and 3| projecting tangentially from the helix. When at rest, the leg 3!] lies substantially horizontally and leg 3! lies inclined upwardly at an acute angle to the horizontal.

The outer end of the leg 30 is bent around a bearing 32 which is rotatably mounted upon a staple 33 driven into the back of the front rail l0. fibrous material impregnated with a lubricant such as graphite, so that the rotary connection between the bearing 32 and the staple 33 is 1ubricated at all times, preventing squeaking during use. It will be noted that the width of the bearing 32 is only slightly less than the distance between the legs of the staple 33 so as to substantially eliminate side motion of the bearing. The upper leg of the spring extends around'under the corner of the frame I6. It is clamped to member 56 by clamps 52 and 5!, respectively.

While I have illustrated and described what I now regard as the preferred embodiment of 'my invention, the construction is, it is to be understood, susceptible of being modified variously without departing from the spirit and scope of my invention. I, therefore, do not hereby restrict myself to the specific forms of construction herein illustrated and described, but preempt to myself, all modifications that fall within the scope of the appended claims.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. In a seat construction, a framework; an angularly cornered frame for supporting a seat; resilient means for supporting the frame on the framework, said means including spring elements each of which comprises a vertically-disposed coil spring having upper and lower tangential legs, the upper leg being provided with an angular, horizontal extension having similar angularity to a corner of the frame, the angular horizontal 'extension of the upper leg extending around the swivel connections with the post means, circular coils having upper extensions secured to the seat frame, and lower extensions, and means pivotally connecting the lower extension with the swiveled arms, permitting resilient movement of the coil means in planes substantially at right angles to each other.

3. In seat construction, a framework including a seat frame, and resilient means supporting the 'frame on the framework, post means mounted upon the framework, arms having swivel connections with the post means, said resilient means comprising vertically disposed coil spring means having upper ends for resiliently supporting the seat frame, and lower ends and substantially horizontal pins pivotally connecting the lower ends of the coil spring means with the outer,

' swinging ends of the swiveled armapermitting The bearing 32 may be made of compressedto secure said bent ends in position to prevent side sway of the coils, resilient elements connected to the framework to swivel in a plane transverse to the general planes of the coils, and

a pivotal connection between the latter elements and the ends of the lower extensions.

5. In a seat construction, a framework, an angularly cornered seat frame, resilient means for supporting the seat frame on the framework,

said means including spring elements each of which comprises a vertically disposed coil spring having upper and lower diverging legs, the upper leg being provided with a horizontal portion and. with an angularly directed horizontal extension of said portion, the angularity between said portion and extension being similar to the angularity of a corner of the seat frame and said portion and extension being respectively parallel to the two sides of the seat frame defining said corner, a bracket having an embossment in which said portion and extension are housed, said bracket being afiixed to the seat frame within said corner thereof, and resilient members carried by the framework and each having a portion pivotally connected to the lower leg of each coil spring:

6. A seat construction comprising a framework, a seat frame thereabove, means connecting the seat frame and the framework for resilient support of the former, said means comprising a vertically disposed coil spring at each corner of the seat construction, each coil spring having angularly diverging upper and lower arms, each upper arm having a bent end, a

bracket fixed to and within each seat frame corner and comprising a pair of plates clamping each respective bent end therebetween whereby the spring coils are held vertically disposed, a

- resilient member carried by the framework within each corner thereof, a pivotal connection between each resilient member and the lower arm of each respective coil spring, and a swivel mounting for each resilient member;

, STANLEY OVERBY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number' Name Date 542,115 Staples July 2, 1895 1,347,413 Schaefer July 20, 1920 1,994,901 Stern Mar. 19, 1935 2,250,486 Kronheim July 29, 1941 2,293,323 Viall, Sr., et al. Aug. '18, 1942 2,294,534 Berger Sept. 1,1942 2,308,772 Neely Jan. 19, 1943 2,332,041 Asaro Oct. 19, 1943 FOREIGN PATENTS Number Country Date 642,873 Germany July 21, 1934 

